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Square D Motor Logic Solid State Overload Relay, Isolated Alarm Contact
Model: SQU-9999AC04
Square D Motor Logic Solid State Overload Relay, Isolated Alarm ContactThe Square D Motor Logic solid state overload relay isolated alarm contact is designed for use with Motor Logic overload relays...
Square D
$79.97
Square D Motor Logic Solid State Overload Relay Lug Extender Kit, 600V
The Square D Motor Logic solid state overload relay lug extender kit (9999LB0) protects 50/60 Hz, 3 phase AC motors from overload, phase unbalance, and phase loss conditions. Built for retrofit NEMA Type S motor starter applications, this kit gives panel builders and electricians a reliable path to upgrade existing starters without a full starter replacement. Rated for 600V AC operation, it is engineered for demanding commercial and industrial motor control environments where dependable overload protection is critical.
Key Features
- Retrofit Compatibility: Designed for retrofit NEMA Type S motor starter applications, simplifying upgrades without full starter replacement.
- Solid-State Overload Protection: Protects 50/60 Hz, 3 phase AC motors from overload, phase unbalance, and phase loss conditions.
- Rated Operational Voltage: 600V AC for use in demanding industrial and commercial systems.
- Simple Installation: Straightforward setup reduces labor time on retrofit jobs.
- Field-Interchangeable Thermal Units: Supports field interchangeable thermal units for replacement motor installations.
- Flexible Mounting: Available as direct mount or separate mount to fit varied panel layouts.
- Broad Starter Compatibility: Comes standard installed on both non-reversing and reversing, as well as combination and multispeed starters.
- Equipment Protection: Provides thermal protection for the most costly motor equipment in a facility.
Certifications & Compliance
- EU RoHS: Pro-active compliance (product out of EU RoHS legal scope)
- China RoHS: Product out of China RoHS scope; substance declaration available
Technical Specifications
- Product Type: Overload Relay Accessory
- Voltage Rating: 600V
Typical Applications
- NEMA Type S Motor Starter Retrofits
- Industrial Motor Control Panels
- OEM and Panel Builder Starter Assemblies
- Non-Reversing and Reversing Motor Starters
- Combination and Multispeed Starter Systems
- Replacement Motor Installations
Why Square D?
Square D Motor Logic overload relay components are engineered for dependable, code-conscious performance across industrial and commercial motor control applications. With field-interchangeable thermal units, flexible mounting options, and broad compatibility across starter configurations, this lug extender kit helps panel builders and electricians keep critical motor equipment protected during retrofits and replacements.
Manufacturer Resources
Product Specs
- Product Type:
- Overload Relay Accessory
- Voltage Rating:
- 600V
- Series:
- Motor Logic
- Department:
- Electrical
- Product Group:
- Motor Control & Automation
- Product Subgroup:
- Overload Relays
Square D 9999LB0 – Frequently Asked Questions
1) What does the Square D 9999LB0 lug extender kit actually do on a Motor Logic overload relay?
The 9999LB0 is an accessory for Square D Motor Logic solid state overload relays, not a relay itself. It extends the lug connection point so the relay can be wired into an existing NEMA Type S motor starter during a retrofit, instead of replacing the whole starter. The relay it supports protects 50/60 Hz three phase AC motors against overload, phase unbalance, and phase loss.
2) Can I use the 9999LB0 extender kit on a 480V or 600V motor control panel?
Yes. The kit is rated for 600V AC operation, so it covers the common 208, 240, 480, and 600 volt three phase control circuits found in industrial and commercial panels.
3) Do I have to replace the whole motor starter to add solid state overload protection?
No. The 9999LB0 kit exists specifically so an existing NEMA Type S starter can be upgraded in place. You keep the starter and add the Motor Logic relay with the extender kit, which cuts labor on the retrofit compared with pulling and rebuilding the starter.
4) I need to bring an overload relay reset to the enclosure door, not extend the lugs. Which part does that?
The Square D 9999LB0 is a lug extender kit for Motor Logic solid state overload relays on NEMA Type S starter retrofits, so it addresses the power connections rather than the reset. For reset access, the Eaton ZEB-XRB is an overload reset bar accessory for the Eaton C440/XTOE relay family. Choose by relay platform: the 9999LB0 for Square D Motor Logic NEMA Type S work, the reset bar for Eaton C440/XTOE relays.
5) Can an Eaton XTOBXDIN adapter be used in place of the Square D 9999LB0 lug extender kit?
No. The Square D 9999LB0 is a Motor Logic solid state overload relay lug extender kit rated 600V and built for retrofit NEMA Type S motor starter applications. The Eaton XTOBXDIN is an XT series bimetallic overload relay adapter for Eaton C/D frame IEC relays, so it addresses an IEC overload relay rather than a NEMA Type S starter retrofit. The two serve different starter platforms and are not interchangeable.
6) Will this work on a reversing starter, or only non-reversing?
Both. Motor Logic overload relays come standard installed on non-reversing and reversing starters as well as combination and multispeed starters, so the lug extender kit is applicable across those starter configurations in NEMA Type S retrofits.
7) I'm swapping in a different horsepower motor later. Does the Motor Logic relay have to be changed too?
Motor Logic overload relays support field interchangeable thermal units, so a replacement motor installation can usually be handled by changing the thermal unit rather than the relay assembly. The lug extender kit stays in place.
8) Does the extender kit limit me to direct mount, or can the relay sit separately in the panel?
Either. The Motor Logic overload relay is offered as direct mount or separate mount, which matters when panel space or wire routing forces the relay off the contactor body.
9) Does the 9999LB0 meet RoHS requirements for our procurement paperwork?
The kit falls outside the legal scope of EU RoHS but Square D declares pro-active compliance, and it is out of China RoHS scope with a substance declaration available. Country of origin is Mexico.
10) What part number do I order for the Square D Motor Logic lug extender kit?
Order Square D part 9999LB0. It is a single catalog number with no finish, size, or voltage variations to specify, rated 600V.
How fast can I get the Square D 9999LB0 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D 9999LB0 come with a warranty?
Absolutely. The Square D 9999LB0 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D 9999LB0?
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